The Roman god of revelry is Comus, a deity associated with the Greek god Dionysus. He was the god of festivity and merrymaking, and was often depicted as a young man with a crown of ivy leaves. He was also known for his association with the Maenads, female followers of Dionysus who were known for their wild and ecstatic behavior. Comus was believed to bring joy and pleasure to those who celebrated him, and was often invoked during festivals and other celebrations.